Variability Chart Add Ref Line

Aug 11, 2013 11:08 PM(1383 views)

I have the following variability chart. The Column "Device" has many type of variable string values and I want it to plot all of them.I know i can create individually but too many of them. Also the Add Ref Line which is my limit was also a variable called "MAX_LIMIT" each Device has its own limit. How will I write script to plot all of them?